{"schemaVersion":3,"id":"CVE-2026-88058","aliases":["UBUNTU-CVE-2026-88058","DEBIAN-CVE-2026-88058","GHSA-j3r3-mxqp-r2p4"],"status":"published","duplicateOf":null,"title":null,"description":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim's browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.","dates":{"published":"2026-09-10T18:56:03.369Z","modified":"2026-09-11T15:14:37.967Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.6,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":7.2,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":7.2,"impact":4.5,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Npm","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00281,"percentile":0.19357,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":-0.217,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00498},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00281,"percentile":0.19357}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00498,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00875,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00281,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00281,"percentile":0.19357}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_ANGULAR_ANGULAR","name":"Angular","source":"github","url":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"},{"id":"CWE-116","name":"Improper Encoding or Escaping of Output","description":"The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/116.html"}],"affected":[{"vendor":"angular","product":"angular","name":"angular","label":"angular","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 19.2.25","noFixRecorded":false,"fixedIn":null},{"text":"≥ 19.0.0, ≤ 19.2.25","noFixRecorded":false,"fixedIn":null},{"text":"≥ 20.0.0, < 20.3.30","noFixRecorded":false,"fixedIn":null},{"text":"≥ 21.0.0, < 21.2.22","noFixRecorded":false,"fixedIn":null},{"text":"≥ 22.0.0, < 22.1.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 19.2.25 | ≥ 19.0.0, ≤ 19.2.25 | ≥ 20.0.0, < 20.3.30 | ≥ 21.0.0, < 21.2.22 | ≥ 22.0.0, < 22.1.4","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"angular","label":"Angular","category":"framework"}},"hubHref":"/vendor/angular/angular"},{"vendor":"debian","product":"angular.js","name":"angular.js","label":"angular.js","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/angular.js","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"angular.js","name":"angular.js","label":"angular.js","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/angular.js","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"@angular","product":"platform-server","name":"@angular/platform-server","label":"platform-server","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/@angular/platform-server","purlType":"npm","versions":[{"text":"≥ 22.0.0, < 22.1.4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 21.0.0, < 21.2.22","noFixRecorded":false,"fixedIn":null},{"text":"≥ 20.0.0, < 20.3.30","noFixRecorded":false,"fixedIn":null},{"text":"≤ 19.2.25","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 22.0.0, < 22.1.4 | ≥ 21.0.0, < 21.2.22 | ≥ 20.0.0, < 20.3.30 | ≤ 19.2.25","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4","label":"github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","WEB","Exploit","Third Party Advisory"]},{"url":"https://github.com/angular/angular/issues/70146","label":"github.com/angular/angular/issues/70146","hostname":"github.com","tags":["X Refsource MISC","WEB","Issue Tracking","Patch"]},{"url":"https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915","label":"github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch"]},{"url":"https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef","label":"github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch"]},{"url":"https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8","label":"github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch"]},{"url":"https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f","label":"github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch"]},{"url":"https://github.com/angular/angular/releases/tag/v20.3.30","label":"github.com/angular/angular/releases/tag/v20.3.30","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://github.com/angular/angular/releases/tag/v21.2.22","label":"github.com/angular/angular/releases/tag/v21.2.22","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://github.com/angular/angular/releases/tag/v22.1.4","label":"github.com/angular/angular/releases/tag/v22.1.4","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://ubuntu.com/security/CVE-2026-88058","label":"ubuntu.com/security/CVE-2026-88058","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88058","label":"www.cve.org/CVERecord?id=CVE-2026-88058","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-88058","label":"security-tracker.debian.org/tracker/CVE-2026-88058","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88058","label":"nvd.nist.gov/vuln/detail/CVE-2026-88058","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/angular/angular","label":"github.com/angular/angular","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-10T18:56:03.369Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-11T15:14:37.967Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":44,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T14:49:24.856Z","stale":false,"partial":false}}